Dr. John T. Marriott, DO
- Medicare services, 2024
- 407
- Medicare patients, 2024
- 393
- Hospital affiliations
- 1
- Medical groups
- 2
- Insurance carriers
- 14
- Practice address
- 16920 Park Row Dr, Houston, TX 77084
- Practice phone
- Call (713) 425-8118
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Houston MRI & Diagnostic Imaging
Houston, Texas
Find Dr. Marriott's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John T. Marriott is a diagnostic radiologist in Houston, Texas
Dr. Marriott practices at Houston MRI & Diagnostic Imaging in Houston, Texas.
Dr. Marriott's NPI, 1134102668, was assigned on November 29, 2005. Dr. Marriott graduated from Des Moines University in 1987. Dr. Marriott holds Texas license K9343.
- NPI
- 1134102668NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426049115
- NPI enumeration date
- November 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (713) 425-8118
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John T. Marriott practices at Houston MRI & Diagnostic Imaging in Houston, Texas
Dr. Marriott's primary practice is Houston MRI & Diagnostic Imaging, at 16920 Park Row Dr, Houston, TX 77084 in Harris County. The practice phone is (713) 425-8118.
- Houston MRI & Diagnostic Imaging16920 Park Row Dr, Houston, TX 77084 · Harris CountyPhone(713) 425-8118
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John T. Marriott is affiliated with 3 sites of care and 2 medical groups
Dr. Marriott's primary practice is Houston MRI & Diagnostic Imaging in Houston, Texas. Dr. Marriott is also affiliated with HCA Houston Healthcare Conroe. The medical group on file is Singleton Associates PA. Dmand AI also links Dr. Marriott to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John T. Marriott's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marriott practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Houston MRI & Diagnostic Imaging | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John T. Marriott is one of 2,616 diagnostic radiologists in Texas
Diagnostic radiology is Dr. Marriott's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Marriott is board certified in diagnostic radiology by the American Board of Radiology. Dr. Marriott is licensed in Texas.
Specialties and state licenses
- Diagnostic radiology, TexasPrimary
Diagnostic radiologists near Dr. Marriott
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John T. Marriott billed Medicare for 407 services in 2024
CMS data shows 407 Medicare services from Dr. Marriott across 10 procedure codes in 2024, for 393 Medicare patients. Medicare paid $4,909 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marriott's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 6642024: 39640%
- Tests and treatments
- 2023: 02024: 11
Dr. Marriott compared with the Texas median for diagnostic radiologists, 2024
- Dr. Marriott
- Texas median
- Medicare services
- 407vs 1,87478% below
- Medicare patients
- 393vs 1,28469% below
Medians across 2,414 diagnostic radiologists in Texas with Dmand AI profiles that report each measure.
Dr. Marriott's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marriott and other diagnostic radiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John T. Marriott treated 393 Medicare patients in 2024, average age 75
CMS counts 393 Medicare patients who saw Dr. Marriott in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Marriott's median patient age at 63, with 62% women.
Dr. Marriott's Medicare patients by age, 2024
Dr. Marriott's Medicare patients by sex, 2024
- Women19550%
- Men19850%
Chronic conditions among Dr. Marriott's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease53%
- Diabetes44%
- Heart failure41%
- Anxiety40%
- Atrial fibrillation39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marriott's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John T. Marriott takes part in Medicare
Dr. Marriott accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John T. Marriott graduated from Des Moines University
Dr. Marriott graduated from Des Moines University in 1987.
- Medical school
- Board certified in diagnostic radiology
- Board certified in 1994 - 2001
- Board certified in 1989 - 1994
- Board certified in 2000 - 2027
Source: Dmand AI Professional Profile Data
Dr. John T. Marriott accepts plans from 14 insurance carriers
Dr. Marriott is in network with 14 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Alliant Health Plans
- HCSC
- Baylor Scott and White
- Blue Cross and Blue Shield of Kansas City
- +6 more carriersWith a free account
Plan types Dr. Marriott accepts, by number of carriers
- HMO9
- PPO8
- POS5
- Medicare4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. John T. Marriott's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John T. Marriott
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John T. Marriott's NPI number?
Dr. John T. Marriott's NPI number is 1134102668. It was assigned on November 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John T. Marriott?
Dr. John T. Marriott is a diagnostic radiologist in Houston, Texas. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John T. Marriott practice?
Dr. Marriott practices at 16920 Park Row Dr, Houston, TX 77084. Dr. Marriott's primary practice is Houston MRI & Diagnostic Imaging in Houston, Texas. Dmand AI also links Dr. Marriott to 1 group practice or clinic and 1 medical group.
What is Dr. John T. Marriott's office phone number?
The practice phone on file for Dr. Marriott is (713) 425-8118.
What is Dr. John T. Marriott's medical license number?
Dr. Marriott holds Texas license K9343.
Which hospitals is Dr. John T. Marriott affiliated with?
Dr. Marriott is affiliated with HCA Houston Healthcare Conroe.
What medical group is Dr. John T. Marriott part of?
Dr. Marriott is linked to Singleton Associates PA. Dmand AI links Dr. Marriott to 1 more medical group.
Does Dr. John T. Marriott accept Medicare?
Yes. CMS data shows Dr. Marriott billed Medicare for 407 services in 2024, and Dr. Marriott accepts Medicare assignment.
How many Medicare patients does Dr. John T. Marriott see?
CMS counts 393 Medicare patients who saw Dr. Marriott in 2024, with an average age of 75.
Is Dr. John T. Marriott board certified?
Yes. Dr. Marriott is board certified in diagnostic radiology by the American Board of Radiology.
Show 4 more questionsShow fewer questions
What services does Dr. John T. Marriott bill to Medicare?
In 2024, Dr. Marriott's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (74018) and diagnostic imaging (71046).
Where did Dr. John T. Marriott go to medical school?
Dr. Marriott graduated from Des Moines University in 1987.
How long has Dr. John T. Marriott been practicing?
Dr. Marriott graduated from medical school in 1987, 39 years ago.
What insurance does Dr. John T. Marriott accept?
Dr. Marriott is in network with 14 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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